Thymine and Cytosine Differ from Adenine and Guanine in That

question 48

Multiple Choice

Thymine and cytosine differ from adenine and guanine in that ________.

• A)thymine and cytosine are single-ring structures,whereas adenine and guanine are double-ring structures
• B)thymine and cytosine are only found in DNA,whereas adenine and guanine are found in both DNA and RNA
• C)thymine and cytosine are only found in DNA,whereas adenine and guanine are only found in RNA
• D)thymine and cytosine are larger nitrogenous bases

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